If things are like this I absolutely agree with the strategy of automulligan
My question raised because of a game I started with just a Nova in hand, which was free to play the first turn, but my deck had just 3 Nova and around 13 Pillars, so Nova was just a support card. The same thing I think could happen if, for example, I've got just a Photon in hand at first round... I don't think it's properly right to have a system like this, but I also have seen very strange decks around, with no pillars or with a photon-immolation philosophy, so maybe this is just the right way to let all types of deks exist.
I personally like very much this game and the way it's built, I believe Elements builders have already done all these discussion about this matter, so I'll just say I'll take it as is and just think of a deck that won't come in disadvantage because of this well thought automulligan method
Thank you very much for the answers!